[NETFILTER]: {ip,ip6}_tables: reformat to eliminate differences
Reformat ip_tables.c and ip6_tables.c in order to eliminate non-functional
differences and minimize diff output.
This allows to get a view of the real differences using:
sed -e 's/IP6T/IPT/g' \
-e 's/IP6/IP/g' \
-e 's/INET6/INET/g' \
-e 's/ip6t/ipt/g' \
-e 's/ip6/ip/g' \
-e 's/ipv6/ip/g' \
-e 's/icmp6/icmp/g' \
net/ipv6/netfilter/ip6_tables.c |
diff -wup /dev/stdin net/ipv4/netfilter/ip_tables.c
Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
---
commit 78122604ad05f50a11447c798605d985a4357843
tree 11cc6bcc105e7b9cd125a0b99a99954f51daeb43
parent 1d1b0c11ae4ac0beacfc129f003ddeb8c5b6f691
author Patrick McHardy <kaber@xxxxxxxxx> Mon, 17 Dec 2007 14:57:57 +0100
committer Patrick McHardy <kaber@xxxxxxxxx> Tue, 18 Dec 2007 00:24:53 +0100
net/ipv4/netfilter/ip_tables.c | 66 ++++++++++++++++++---------------------
net/ipv6/netfilter/ip6_tables.c | 46 ++++++++++++++-------------
2 files changed, 53 insertions(+), 59 deletions(-)
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 07be12c..231f5d2 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -74,7 +74,7 @@ do { \
Hence the start of any table is given by get_table() below. */
/* Returns whether matches rule or not. */
-static inline int
+static inline bool
ip_packet_match(const struct iphdr *ip,
const char *indev,
const char *outdev,
@@ -102,7 +102,7 @@ ip_packet_match(const struct iphdr *ip,
NIPQUAD(ipinfo->dmsk.s_addr),
NIPQUAD(ipinfo->dst.s_addr),
ipinfo->invflags & IPT_INV_DSTIP ? " (INV)" : "");
- return 0;
+ return false;
}
/* Look for ifname matches; this should unroll nicely. */
@@ -116,7 +116,7 @@ ip_packet_match(const struct iphdr *ip,
dprintf("VIA in mismatch (%s vs %s).%s\n",
indev, ipinfo->iniface,
ipinfo->invflags&IPT_INV_VIA_IN ?" (INV)":"");
- return 0;
+ return false;
}
for (i = 0, ret = 0; i < IFNAMSIZ/sizeof(unsigned long); i++) {
@@ -129,7 +129,7 @@ ip_packet_match(const struct iphdr *ip,
dprintf("VIA out mismatch (%s vs %s).%s\n",
outdev, ipinfo->outiface,
ipinfo->invflags&IPT_INV_VIA_OUT ?" (INV)":"");
- return 0;
+ return false;
}
/* Check specific protocol */
@@ -138,7 +138,7 @@ ip_packet_match(const struct iphdr *ip,
dprintf("Packet protocol %hi does not match %hi.%s\n",
ip->protocol, ipinfo->proto,
ipinfo->invflags&IPT_INV_PROTO ? " (INV)":"");
- return 0;
+ return false;
}
/* If we have a fragment rule but the packet is not a fragment
@@ -146,10 +146,10 @@ ip_packet_match(const struct iphdr *ip,
if (FWINV((ipinfo->flags&IPT_F_FRAG) && !isfrag, IPT_INV_FRAG)) {
dprintf("Fragment rule but not fragment.%s\n",
ipinfo->invflags & IPT_INV_FRAG ? " (INV)" : "");
- return 0;
+ return false;
}
- return 1;
+ return true;
}
static inline bool
@@ -222,7 +222,7 @@ unconditional(const struct ipt_ip *ip)
static const char *hooknames[] = {
[NF_INET_PRE_ROUTING] = "PREROUTING",
[NF_INET_LOCAL_IN] = "INPUT",
- [NF_INET_FORWARD] = "FORWARD",
+ [NF_INET_FORWARD] = "FORWARD",
[NF_INET_LOCAL_OUT] = "OUTPUT",
[NF_INET_POST_ROUTING] = "POSTROUTING",
};
@@ -467,8 +467,7 @@ mark_source_chains(struct xt_table_info *newinfo,
to 0 as we leave), and comefrom to save source hook bitmask */
for (hook = 0; hook < NF_INET_NUMHOOKS; hook++) {
unsigned int pos = newinfo->hook_entry[hook];
- struct ipt_entry *e
- = (struct ipt_entry *)(entry0 + pos);
+ struct ipt_entry *e = (struct ipt_entry *)(entry0 + pos);
if (!(valid_hooks & (1 << hook)))
continue;
@@ -486,8 +485,7 @@ mark_source_chains(struct xt_table_info *newinfo,
hook, pos, e->comefrom);
return 0;
}
- e->comefrom
- |= ((1 << hook) | (1 << NF_INET_NUMHOOKS));
+ e->comefrom |= ((1 << hook) | (1 << NF_INET_NUMHOOKS));
/* Unconditional return/END. */
if ((e->target_offset == sizeof(struct ipt_entry)
@@ -589,7 +587,8 @@ check_entry(struct ipt_entry *e, const char *name)
return -EINVAL;
}
- if (e->target_offset + sizeof(struct ipt_entry_target) > e->next_offset)
+ if (e->target_offset + sizeof(struct ipt_entry_target) >
+ e->next_offset)
return -EINVAL;
t = ipt_get_target(e);
@@ -633,7 +632,7 @@ find_check_match(struct ipt_entry_match *m,
int ret;
match = try_then_request_module(xt_find_match(AF_INET, m->u.user.name,
- m->u.user.revision),
+ m->u.user.revision),
"ipt_%s", m->u.user.name);
if (IS_ERR(match) || !match) {
duprintf("find_check_match: `%s' not found\n", m->u.user.name);
@@ -959,7 +958,6 @@ copy_entries_to_user(unsigned int total_size,
* allowed to migrate to another cpu)
*/
loc_cpu_entry = private->entries[raw_smp_processor_id()];
- /* ... then copy entire thing ... */
if (copy_to_user(userptr, loc_cpu_entry, total_size) != 0) {
ret = -EFAULT;
goto free_counters;
@@ -1169,15 +1167,13 @@ get_entries(struct ipt_get_entries __user *uptr, int *len)
t = xt_find_table_lock(AF_INET, get.name);
if (t && !IS_ERR(t)) {
struct xt_table_info *private = t->private;
- duprintf("t->private->number = %u\n",
- private->number);
+ duprintf("t->private->number = %u\n", private->number);
if (get.size == private->size)
ret = copy_entries_to_user(private->size,
t, uptr->entrytable);
else {
duprintf("get_entries: I've got %u not %u!\n",
- private->size,
- get.size);
+ private->size, get.size);
ret = -EINVAL;
}
module_put(t->me);
@@ -1281,7 +1277,7 @@ do_replace(void __user *user, unsigned int len)
if (!newinfo)
return -ENOMEM;
- /* choose the copy that is our node/cpu */
+ /* choose the copy that is on our node/cpu */
loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
if (copy_from_user(loc_cpu_entry, user + sizeof(tmp),
tmp.size) != 0) {
@@ -1304,7 +1300,7 @@ do_replace(void __user *user, unsigned int len)
return 0;
free_newinfo_untrans:
- IPT_ENTRY_ITERATE(loc_cpu_entry, newinfo->size, cleanup_entry,NULL);
+ IPT_ENTRY_ITERATE(loc_cpu_entry, newinfo->size, cleanup_entry, NULL);
free_newinfo:
xt_free_table_info(newinfo);
return ret;
@@ -1651,7 +1647,8 @@ static inline int compat_check_entry(struct ipt_entry *e, const char *name,
int j, ret;
j = 0;
- ret = IPT_MATCH_ITERATE(e, check_match, name, &e->ip, e->comefrom, &j);
+ ret = IPT_MATCH_ITERATE(e, check_match, name, &e->ip,
+ e->comefrom, &j);
if (ret)
goto cleanup_matches;
@@ -1744,8 +1741,8 @@ translate_compat_table(const char *name,
pos = entry1;
size = total_size;
ret = COMPAT_IPT_ENTRY_ITERATE(entry0, total_size,
- compat_copy_entry_from_user, &pos, &size,
- name, newinfo, entry1);
+ compat_copy_entry_from_user,
+ &pos, &size, name, newinfo, entry1);
xt_compat_flush_offsets(AF_INET);
xt_compat_unlock(AF_INET);
if (ret)
@@ -1813,7 +1810,7 @@ compat_do_replace(void __user *user, unsigned int len)
if (!newinfo)
return -ENOMEM;
- /* choose the copy that is our node/cpu */
+ /* choose the copy that is on our node/cpu */
loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
if (copy_from_user(loc_cpu_entry, user + sizeof(tmp),
tmp.size) != 0) {
@@ -1934,16 +1931,14 @@ compat_get_entries(struct compat_ipt_get_entries __user *uptr, int *len)
if (t && !IS_ERR(t)) {
struct xt_table_info *private = t->private;
struct xt_table_info info;
- duprintf("t->private->number = %u\n",
- private->number);
+ duprintf("t->private->number = %u\n", private->number);
ret = compat_table_info(private, &info);
if (!ret && get.size == info.size) {
ret = compat_copy_entries_to_user(private->size,
t, uptr->entrytable);
} else if (!ret) {
duprintf("compat_get_entries: I've got %u not %u!\n",
- private->size,
- get.size);
+ private->size, get.size);
ret = -EINVAL;
}
xt_compat_flush_offsets(AF_INET);
@@ -1981,7 +1976,7 @@ compat_do_ipt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
#endif
static int
-do_ipt_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len)
+do_ipt_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len)
{
int ret;
@@ -2068,9 +2063,7 @@ int ipt_register_table(struct xt_table *table, const struct ipt_replace *repl)
if (!newinfo)
return -ENOMEM;
- /* choose the copy on our node/cpu
- * but dont care of preemption
- */
+ /* choose the copy on our node/cpu, but dont care about preemption */
loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
memcpy(loc_cpu_entry, repl->entries, repl->size);
@@ -2112,7 +2105,8 @@ icmp_type_code_match(u_int8_t test_type, u_int8_t min_code, u_int8_t max_code,
u_int8_t type, u_int8_t code,
bool invert)
{
- return ((test_type == 0xFF) || (type == test_type && code >= min_code && code <= max_code))
+ return ((test_type == 0xFF) ||
+ (type == test_type && code >= min_code && code <= max_code))
^ invert;
}
@@ -2153,7 +2147,7 @@ icmp_match(const struct sk_buff *skb,
/* Called when user tries to insert an entry of this type. */
static bool
icmp_checkentry(const char *tablename,
- const void *info,
+ const void *entry,
const struct xt_match *match,
void *matchinfo,
unsigned int hook_mask)
@@ -2204,9 +2198,9 @@ static struct xt_match icmp_matchstruct __read_mostly = {
.name = "icmp",
.match = icmp_match,
.matchsize = sizeof(struct ipt_icmp),
+ .checkentry = icmp_checkentry,
.proto = IPPROTO_ICMP,
.family = AF_INET,
- .checkentry = icmp_checkentry,
};
static int __init ip_tables_init(void)
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index db0dc96..0a2ec4b 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -371,8 +371,8 @@ ip6t_do_table(struct sk_buff *skb,
* match it. */
read_lock_bh(&table->lock);
- private = table->private;
IP_NF_ASSERT(table->valid_hooks & (1 << hook));
+ private = table->private;
table_base = (void *)private->entries[smp_processor_id()];
e = get_entry(table_base, private->hook_entry[hook]);
@@ -496,9 +496,7 @@ mark_source_chains(struct xt_table_info *newinfo,
to 0 as we leave), and comefrom to save source hook bitmask */
for (hook = 0; hook < NF_INET_NUMHOOKS; hook++) {
unsigned int pos = newinfo->hook_entry[hook];
- struct ip6t_entry *e
- = (struct ip6t_entry *)(entry0 + pos);
- int visited = e->comefrom & (1 << hook);
+ struct ip6t_entry *e = (struct ip6t_entry *)(entry0 + pos);
if (!(valid_hooks & (1 << hook)))
continue;
@@ -509,14 +507,14 @@ mark_source_chains(struct xt_table_info *newinfo,
for (;;) {
struct ip6t_standard_target *t
= (void *)ip6t_get_target(e);
+ int visited = e->comefrom & (1 << hook);
if (e->comefrom & (1 << NF_INET_NUMHOOKS)) {
printk("iptables: loop hook %u pos %u %08X.\n",
hook, pos, e->comefrom);
return 0;
}
- e->comefrom
- |= ((1 << hook) | (1 << NF_INET_NUMHOOKS));
+ e->comefrom |= ((1 << hook) | (1 << NF_INET_NUMHOOKS));
/* Unconditional return/END. */
if ((e->target_offset == sizeof(struct ip6t_entry)
@@ -663,7 +661,7 @@ find_check_match(struct ip6t_entry_match *m,
int ret;
match = try_then_request_module(xt_find_match(AF_INET6, m->u.user.name,
- m->u.user.revision),
+ m->u.user.revision),
"ip6t_%s", m->u.user.name);
if (IS_ERR(match) || !match) {
duprintf("find_check_match: `%s' not found\n", m->u.user.name);
@@ -885,7 +883,7 @@ translate_table(const char *name,
memcpy(newinfo->entries[i], entry0, newinfo->size);
}
- return 0;
+ return ret;
}
/* Gets counters. */
@@ -984,7 +982,10 @@ copy_entries_to_user(unsigned int total_size,
if (IS_ERR(counters))
return PTR_ERR(counters);
- /* choose the copy that is on ourc node/cpu */
+ /* choose the copy that is on our node/cpu, ...
+ * This choice is lazy (because current thread is
+ * allowed to migrate to another cpu)
+ */
loc_cpu_entry = private->entries[raw_smp_processor_id()];
if (copy_to_user(userptr, loc_cpu_entry, total_size) != 0) {
ret = -EFAULT;
@@ -1199,7 +1200,7 @@ get_entries(struct ip6t_get_entries __user *uptr, int *len)
t, uptr->entrytable);
else {
duprintf("get_entries: I've got %u not %u!\n",
- private->size, entries->size);
+ private->size, get.size);
ret = -EINVAL;
}
module_put(t->me);
@@ -1361,8 +1362,8 @@ do_add_counters(void __user *user, unsigned int len, int compat)
char *name;
int size;
void *ptmp;
- struct xt_table_info *private;
struct xt_table *t;
+ struct xt_table_info *private;
int ret = 0;
void *loc_cpu_entry;
#ifdef CONFIG_COMPAT
@@ -1829,7 +1830,7 @@ compat_do_replace(void __user *user, unsigned int len)
if (!newinfo)
return -ENOMEM;
- /* choose the copy that is our node/cpu */
+ /* choose the copy that is on our node/cpu */
loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
if (copy_from_user(loc_cpu_entry, user + sizeof(tmp),
tmp.size) != 0) {
@@ -1950,16 +1951,14 @@ compat_get_entries(struct compat_ip6t_get_entries __user *uptr, int *len)
if (t && !IS_ERR(t)) {
struct xt_table_info *private = t->private;
struct xt_table_info info;
- duprintf("t->private->number = %u\n",
- private->number);
+ duprintf("t->private->number = %u\n", private->number);
ret = compat_table_info(private, &info);
if (!ret && get.size == info.size) {
ret = compat_copy_entries_to_user(private->size,
t, uptr->entrytable);
} else if (!ret) {
duprintf("compat_get_entries: I've got %u not %u!\n",
- private->size,
- get.size);
+ private->size, get.size);
ret = -EINVAL;
}
xt_compat_flush_offsets(AF_INET6);
@@ -2072,8 +2071,7 @@ do_ip6t_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
return ret;
}
-int ip6t_register_table(struct xt_table *table,
- const struct ip6t_replace *repl)
+int ip6t_register_table(struct xt_table *table, const struct ip6t_replace *repl)
{
int ret;
struct xt_table_info *newinfo;
@@ -2085,7 +2083,7 @@ int ip6t_register_table(struct xt_table *table,
if (!newinfo)
return -ENOMEM;
- /* choose the copy on our node/cpu */
+ /* choose the copy on our node/cpu, but dont care about preemption */
loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
memcpy(loc_cpu_entry, repl->entries, repl->size);
@@ -2141,17 +2139,18 @@ icmp6_match(const struct sk_buff *skb,
unsigned int protoff,
bool *hotdrop)
{
- struct icmp6hdr _icmp, *ic;
+ struct icmp6hdr _icmph, *ic;
const struct ip6t_icmp *icmpinfo = matchinfo;
/* Must not be a fragment. */
if (offset)
return false;
- ic = skb_header_pointer(skb, protoff, sizeof(_icmp), &_icmp);
+ ic = skb_header_pointer(skb, protoff, sizeof(_icmph), &_icmph);
if (ic == NULL) {
/* We've been asked to examine this packet, and we
- can't. Hence, no choice but to drop. */
+ * can't. Hence, no choice but to drop.
+ */
duprintf("Dropping evil ICMP tinygram.\n");
*hotdrop = true;
return false;
@@ -2216,7 +2215,7 @@ static struct nf_sockopt_ops ip6t_sockopts = {
static struct xt_match icmp6_matchstruct __read_mostly = {
.name = "icmp6",
- .match = &icmp6_match,
+ .match = icmp6_match,
.matchsize = sizeof(struct ip6t_icmp),
.checkentry = icmp6_checkentry,
.proto = IPPROTO_ICMPV6,
@@ -2265,6 +2264,7 @@ err1:
static void __exit ip6_tables_fini(void)
{
nf_unregister_sockopt(&ip6t_sockopts);
+
xt_unregister_match(&icmp6_matchstruct);
xt_unregister_target(&ip6t_error_target);
xt_unregister_target(&ip6t_standard_target);
-
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